This is a set of HPI 2.2" Super Star Truck Wheels, and are intended for use with the HPI Firestorm, Savage XS and Wheely King trucks. These wheels are also compatible with the HPI Rush and MT series stadium trucks. The stylish Super Star 2.2 is made from high impact nylon for durability and crash resistance. The wheels are designed to fit front and rear of 4-wheel drive trucks, as well as the rear of 2-wheel drive trucks and are a great bolt on upgrade for your HPI truck.